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Vitamin D (25 OH)

A blood test for Vitamin D, which is vital for the absorption of calcium and phosphate but also for protection against many diseases including cancer and immune disorders.

Vitamin D is a fat-soluble vitamin. It is also known as the 'sunshine vitamin' because we produce most of what we need through exposure to the sun.

Vitamin D controls absorption of calcium and phosphate by the body and is vital for keeping your bones and teeth healthy. That's why it is particularly important for pregnant women, breast-fed babies and children under 5 to produce enough vitamin D.

Vitamin D deficiency is very common, especially in the winter months when sun exposure is reduced. However, if you're over 65, have dark skin or suffer from inflammatory bowel disease or other fat malabsorption conditions you may be more prone to vitamin D deficiency.

Who is this blood test for

This test is for anyone who would like to establish whether they have a vitamin D deficiency. It may be especially useful for pregnant women, people over 65, with black or Asian skin types or people with gut, liver or kidney diseases.

There are several signs of vitamin D deficiency, including fatigue, muscle pain, weakness and cramps, join pain, chronic pain, weight gain, high blood pressure, restless sleep or concentration, headaches, bladder problems, and constipation or diarrhoea.


What's included

Although called a vitamin, vitamin D is actually a hormone which is activated by sunshine on your skin. Vitamin D is essential for bone strength as it helps your intestines absorb calcium. However, it is thought that vitamin D also plays an important role in immune function, as well as in many chronic diseases and mental health.

Many people in the UK do not produce enough Vitamin D, especially in the winter months with fewer daylight hours. It is now recommended that you get 10 - 15 minutes of unprotected sun exposure every day to ensure you are producing enough vitamin D. In winter months, if your levels are found to be low, you may wish to take a supplement.

We will send you your Vitamin D (25 OH) finger-prick blood and test sample collection kit which contains everything you need to take your blood and sample in the comfort of your own home. If you are unsure about completing a finger-prick blood sample collection you will have the opportunity to select a clinic-based venous blood sample collection or choose to go our London laboratory during the checkout process.

Your Vitamin D (25 OH) test includes 1st class postage and packaging for you to send your blood and sample directly to our laboratory for analysis. If you live in an area where you cannot rely on the post or you simply want to ensure that your sample arrives at the laboratory the following day, you may wish to send your blood and sample guaranteed next day delivery for extra reassurance.

Your blood and sample will be analysed at one of our chosen laboratories. You can be assured of fast, accurate results from one of our accredited independent providers of clinical diagnostic tests.
Once you have placed your order you will receive login details to mymedichecks.com where you can manage your account, track your orders and view your Vitamin D (25 OH) test results in your own personal dashboard.
Our medical team will comment on out-of-range blood and test results and give you follow-up advice where necessary. If you need it, a PDF copy of your Vitamin D (25 OH) test results can be downloaded for your doctor. Want a hard-copy report? You will be given the opportunity to order one during the checkout process.


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Vitamin D (25 OH) is included in the following categories: Nutritional Health